home *** CD-ROM | disk | FTP | other *** search
- /* Copyright (C) 1992 Aladdin Enterprises. All rights reserved.
-
- This file is part of Ghostscript.
-
- Ghostscript is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY. No author or distributor accepts responsibility
- to anyone for the consequences of using it or for whether it serves any
- particular purpose or works at all, unless he says so in writing. Refer
- to the Ghostscript General Public License for full details.
-
- Everyone is granted permission to copy, modify and redistribute
- Ghostscript, but only under the conditions described in the Ghostscript
- General Public License. A copy of this license is supposed to have been
- given to you along with Ghostscript so you can know your rights and
- responsibilities. It should be in a file named COPYING. Among other
- things, the copyright notice and this notice must be preserved on all
- copies. */
-
- /* zdosio.c */
- /* DOS direct I/O operators for Ghostscript. */
- /* These should NEVER be included in a released configuration! */
- #include "dos_.h"
- #include "ghost.h"
- #include "errors.h"
- #include "oper.h"
- #include "store.h"
-
- /* <port> inport <word> */
- private int
- zinport(register os_ptr op)
- { check_type(*op, t_integer);
- make_int(op, inport((int)op->value.intval));
- return 0;
- }
-
- /* <port> inportb <byte> */
- private int
- zinportb(register os_ptr op)
- { check_type(*op, t_integer);
- make_int(op, inportb((int)op->value.intval));
- return 0;
- }
-
- /* <port> <word> outport - */
- private int
- zoutport(register os_ptr op)
- { check_type(*op, t_integer);
- check_type(op[-1], t_integer);
- outport((int)op[-1].value.intval, (int)op->value.intval);
- pop(1);
- return 0;
- }
-
- /* <port> <byte> outportb - */
- private int
- zoutportb(register os_ptr op)
- { check_type(*op, t_integer);
- check_type(op[-1], t_integer);
- if ( (ulong)op->value.intval > 0xff )
- return_error(e_rangecheck);
- outportb((int)op[-1].value.intval, (byte)op->value.intval);
- pop(1);
- return 0;
- }
-
- /* <loc> peek <byte> */
- private int
- zpeek(register os_ptr op)
- { check_type(*op, t_integer);
- make_int(op, *(byte *)(op->value.intval));
- return 0;
- }
-
- /* <loc> <byte> poke - */
- private int
- zpoke(register os_ptr op)
- { check_type(*op, t_integer);
- check_type(op[-1], t_integer);
- if ( (ulong)op->value.intval > 0xff )
- return_error(e_rangecheck);
- *(byte *)(op[-1].value.intval) = (byte)op->value.intval;
- pop(1);
- return 0;
- }
-
- /* ------ Operator initialization ------ */
-
- op_def zdosio_op_defs[] = {
- {"1.inport", zinport},
- {"1.inportb", zinportb},
- {"2.outport", zoutport},
- {"2.outportb", zoutportb},
- {"1.peek", zpeek},
- {"2.poke", zpoke},
- op_def_end(0)
- };
-